private void BuildOcTree()
{
if (m_GameObject == null)
{
return;
}
MeshFilter[] mf = null;
if (m_ContainChilds)
{
mf = m_GameObject.GetComponentsInChildren <MeshFilter>();
}
else
{
MeshFilter m = m_GameObject.GetComponent <MeshFilter>();
if (m)
{
mf = new MeshFilter[] { m }
}
;
else
{
return;
}
}
if (mf.Length == 0)
{
return;
}
float maxX = -Mathf.Infinity;
float minX = Mathf.Infinity;
float maxY = -Mathf.Infinity;
float minY = Mathf.Infinity;
float maxZ = -Mathf.Infinity;
float minZ = Mathf.Infinity;
List <OTMeshTriangle> triangles = new List <OTMeshTriangle>();
EditorUtility.ClearProgressBar();
for (int i = 0; i < mf.Length; i++)
{
if (mf[i].sharedMesh == null)
{
continue;
}
for (int j = 0; j < mf[i].sharedMesh.triangles.Length; j += 3)
{
EditorUtility.DisplayProgressBar("生成OcTree", "正在计算包围盒", ((float)j) / mf[i].sharedMesh.triangles.Length);
Vector3 p1 =
mf[i].transform.localToWorldMatrix.MultiplyPoint(
mf[i].sharedMesh.vertices[mf[i].sharedMesh.triangles[j]]);
Vector3 p2 =
mf[i].transform.localToWorldMatrix.MultiplyPoint(
mf[i].sharedMesh.vertices[mf[i].sharedMesh.triangles[j + 1]]);
Vector3 p3 =
mf[i].transform.localToWorldMatrix.MultiplyPoint(
mf[i].sharedMesh.vertices[mf[i].sharedMesh.triangles[j + 2]]);
maxX = Mathf.Max(maxX, p1.x, p2.x, p3.x);
maxY = Mathf.Max(maxY, p1.y, p2.y, p3.y);
maxZ = Mathf.Max(maxZ, p1.z, p2.z, p3.z);
minX = Mathf.Min(minX, p1.x, p2.x, p3.x);
minY = Mathf.Min(minY, p1.y, p2.y, p3.y);
minZ = Mathf.Min(minZ, p1.z, p2.z, p3.z);
OTMeshTriangle triangle = new OTMeshTriangle(p1, p2, p3);
triangles.Add(triangle);
}
}
Vector3 size = new Vector3(maxX - minX, maxY - minY, maxZ - minZ);
if (size.x <= 0)
{
size.x = 0.1f;
}
if (size.y <= 0)
{
size.y = 0.1f;
}
if (size.z <= 0)
{
size.z = 0.1f;
}
Vector3 center = new Vector3(minX, minY, minZ) + size / 2;
MeshOcTree tree = MeshOcTree.CreateInstance <MeshOcTree>();
tree.Build(center, size * 1.1f, 5);
for (int i = 0; i < triangles.Count; i++)
{
EditorUtility.DisplayProgressBar("生成OcTree", "正在生成OcTree", ((float)i) / triangles.Count);
tree.Add(triangles[i]);
}
EditorUtility.ClearProgressBar();
//if (!string.IsNullOrEmpty(path))
//{
//
// AssetDatabase.CreateAsset(tree, path);
//}
//else
//{
ProjectWindowUtil.CreateAsset(tree, "Assets/Resources/New OcTree.asset");
//}
}